The story of WJSV is an interesting piece of broadcasting history, especially its complete day of broadcasting recorded on September 21, 1939. This event is significant as it provides a fascinating snapshot of American radio programming before the widespread use of audio tape recording.

Originally, WJSV was located in Mount Vernon Hills, Virginia, and was initially named after James S. Vance, the general manager of the Fellowship Forum. It began broadcasting in 1928 on 1460 AM. Over time, as the station evolved, its broadcasting location and service area expanded, encompassing Alexandria and Washington, D.C., reflecting the typical fluidity of early radio stations' operations.

By the 1940s, WJSV had changed its call letters to WTOP, a name it still holds today as a prominent news station in Washington, D.C. The transformation from WJSV to WTOP marked the station's transition in focus and branding, aligning more closely with its geographical identity and audience.

The full-day recording in 1939 by WJSV is a rare artifact; radio stations at the time typically did not preserve entire broadcasts due to the limitations of recording technology. On this day, from morning to night, the station captured a wide array of programming that included news broadcasts, music, a baseball game, and the famous "Amos 'n' Andy" show. This recording has been invaluable for historians and enthusiasts as it offers a unique glimpse into the media landscape on the eve of World War II and before the modern era of broadcasting.

Harry C. Butcher, who managed WJSV and later served as a vice president, played a crucial role during this transformative period. His tenure at the station during its groundbreaking recording and his later service as a Naval Aide to President Dwight Eisenhower underline his significant influence in both media and politics during mid-20th century America.